我正在使用 Pagseguro 實現定期付款，并且在我的請求中，正文參數是 json：{  "plan":"*************",  "sender":  {    "name":"Yuri Max Rodrigues Stolai",    "email":"[email protected]",    "hash":"*************",    "phone":{      "areaCode":"99",      "number":"999999999"    },    "address":{      "street":"Street",      "number":"100",      "complement":"House",      "district":"District",      "city":"City",      "state":"ST",      "country":"BRA",      "postalCode":"99999000"    },    "documents":{      "type":"cpf",      "value":"11045312673"    }  },  "paymentMethod":    {      "type":"CREDITCARD",      "creditCard":{        "token":"*************",        "holder":{          "name":"Yuri Stolai",          "birthDate":"01/07/1992"        }      }    }}請求的返回是：無法從 [Source: org.apache.catalina.connector.CoyoteInputStream@4c4cc8ea; 的 START_OBJECT 令牌中反序列化 java.util.List 的實例；行：22，列：6]（通過引用鏈：br.com.uol.ps.api.resources.preapproval.params.jaxb.DirectPreApprovalParamJAXB["sender"]->br.com.uol.ps.api.resources .preapproval.params.jaxb.PreApprovalSenderParamJAXB["documents"])問題出在哪里？